The amount of explosive gas tainting a North Texas neighborhood's water supply has increased in recent years, but the state's oil and gas regulator says it can't link the methane to drilling activity nearby, according to a report it released Wednesday.

Fake appointments, unofficial logs kept on the sly and appointments made without telling the patient are among tricks used to disguise delays in seeing and treating veterans at Veterans Affairs hospitals and clinics.

It seems like a simple proposition: American lakes, rivers and offshore waters are filling up with destructive fish and crustaceans originally from other parts of the world, many of them potential sources of food.